CN108422729A - A kind of broadband sound absorption structure Wood composite flitch - Google Patents
A kind of broadband sound absorption structure Wood composite flitch Download PDFInfo
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- CN108422729A CN108422729A CN201710870208.2A CN201710870208A CN108422729A CN 108422729 A CN108422729 A CN 108422729A CN 201710870208 A CN201710870208 A CN 201710870208A CN 108422729 A CN108422729 A CN 108422729A
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- 239000002023 wood Substances 0.000 title claims abstract description 49
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 title description 13
- 239000004033 plastic Substances 0.000 claims abstract description 38
- 229920003023 plastic Polymers 0.000 claims abstract description 38
- 210000002268 wool Anatomy 0.000 claims abstract description 26
- 239000012792 core layer Substances 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 23
- 239000011491 glass wool Substances 0.000 claims abstract description 4
- 239000000123 paper Substances 0.000 claims description 15
- 239000011111 cardboard Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 18
- 239000000463 material Substances 0.000 description 14
- 239000011358 absorbing material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
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- 239000002655 kraft paper Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
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- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 230000035515 penetration Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
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- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/04—Layered products comprising a layer of paper or cardboard next to a particulate layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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- B32B3/20—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
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- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/028—Paper layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/067—Wood fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/06—Vegetal particles
- B32B2264/062—Cellulose particles, e.g. cotton
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
- E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
本发明公开一种宽频带吸声结构木质复合材料板，包括依次设置的木丝板、蜂窝芯层、纸质薄层和木塑空腔板；木丝板上设有多个孔；蜂窝芯层设有多个呈蜂窝状排列的蜂窝腔；木塑空腔板面向纸质薄层的一侧设有空腔，空腔内设有贴合于空腔底部的玻璃棉。具有该吸声结构的木质复合材料板，对于高频噪声和中低频噪声均有显著的降噪效果，吸声频率范围更宽。
The invention discloses a wooden composite board with a broadband sound-absorbing structure, which comprises a wood wool board, a honeycomb core layer, a paper thin layer and a wood-plastic cavity board arranged in sequence; the wood wool board is provided with a plurality of holes; the honeycomb core The layer is provided with a plurality of honeycomb cavities arranged in a honeycomb shape; the side of the wood-plastic cavity board facing the thin paper layer is provided with a cavity, and the cavity is provided with glass wool attached to the bottom of the cavity. The wood composite material board with this sound-absorbing structure has a significant noise-reducing effect on high-frequency noise and medium-low frequency noise, and the sound-absorbing frequency range is wider.
Description
技术领域technical field
本发明涉及木质复合材料技术领域，特别是涉及一种宽频带吸声结构木质复合材料板。The invention relates to the technical field of wood composite materials, in particular to a wood composite board with a broadband sound-absorbing structure.
背景技术Background technique
吸声材料，是具有一定吸收声能、减低环境噪声性能的材料，无论是控制混响时间、降低噪声、改善声扩散和消除音质缺陷，都需要使用吸声材料，研究吸声结构的声学性能对建筑声学和噪声控制具有重要的现实意义。在建筑装修技术领域，具有吸声结构的木质复合材料是办公或者居住等多种场合广泛需求的一种建筑装修材料。Sound-absorbing materials are materials that can absorb sound energy and reduce environmental noise. Whether it is to control reverberation time, reduce noise, improve sound diffusion, or eliminate sound quality defects, it is necessary to use sound-absorbing materials to study the acoustic performance of sound-absorbing structures. It has important practical significance for architectural acoustics and noise control. In the field of building decoration technology, wood composite materials with sound-absorbing structures are a kind of building decoration materials widely required in various occasions such as office or residence.
目前，已经为公众所知的具有吸声结构的木质复合材料板，大多在某一频段上有较高的吸声系数。一般多孔性材料主要吸收500Hz以上噪声，但低频降噪效果相对较差。例如，现有技术中一种微孔中穿纤维微穿孔板结构，选择普通板材厚度为1-500mm，穿以毫米级微孔，制备成微穿孔板，在微穿孔板设有上下穿行排布的纤维丝，纤维直径从1-100微米范围，纤维穿入率1-100％。这种微穿孔板结构的木质吸声结构，对于下限频率436Hz、上限频率1538Hz，宽度为1102Hz频率范围内的噪声的吸声系数在0.5以上，但是对于更低频率或者更高频率的噪声的吸声效果较差。At present, most of the wood composite panels with sound-absorbing structures known to the public have relatively high sound-absorbing coefficients in a certain frequency band. Generally, porous materials mainly absorb noise above 500Hz, but the low-frequency noise reduction effect is relatively poor. For example, in the prior art, there is a micro-perforated plate structure with micro-holes in the middle. The thickness of the ordinary plate is selected to be 1-500mm, and the micro-holes are pierced with millimeters to prepare a micro-perforated plate. The fiber filaments, the fiber diameter ranges from 1-100 microns, and the fiber penetration rate is 1-100%. The wooden sound-absorbing structure of this micro-perforated plate structure has a sound absorption coefficient of more than 0.5 for the noise in the frequency range of the lower limit frequency of 436Hz, the upper limit frequency of 1538Hz, and the width of 1102Hz. The sound effect is poor.
综上，现有技术中的木质复合吸声材料存在吸声频率范围窄，全频降噪效果不显著的技术问题。To sum up, the wooden composite sound-absorbing materials in the prior art have the technical problems of narrow sound-absorbing frequency range and insignificant full-frequency noise reduction effect.
发明内容Contents of the invention
本发明的目的是提供一种宽频带吸声结构木质复合材料板，以解决现有技术中的吸声频率范围窄，全频降噪效果不显著的技术问题。The purpose of the present invention is to provide a wooden composite material board with broadband sound-absorbing structure to solve the technical problems in the prior art that the sound-absorbing frequency range is narrow and the full-frequency noise reduction effect is not significant.
为实现上述目的，本发明提供了如下方案：To achieve the above object, the present invention provides the following scheme:
一种宽频带吸声结构木质复合材料板，包括依次设置的木丝板、蜂窝芯层、纸质薄层和木塑空腔板；A wide-band sound-absorbing structural wooden composite material board, including a wood wool board, a honeycomb core layer, a paper thin layer and a wood-plastic cavity board arranged in sequence;
所述木丝板上设有多个孔；The wood wool board is provided with a plurality of holes;
所述蜂窝芯层设有多个呈蜂窝状排列的蜂窝腔；The honeycomb core layer is provided with a plurality of honeycomb cavities arranged in a honeycomb shape;
所述木塑空腔板面向所述纸质薄层的一侧设有空腔，所述空腔内设有贴合于空腔底部的玻璃棉。A cavity is provided on the side of the wood-plastic cavity panel facing the paper thin layer, and glass wool attached to the bottom of the cavity is provided in the cavity.
优选地，所述木丝板厚度分为3-9mm，密度为130kg/m3-215kg/m3。Preferably, the wood wool board has a thickness of 3-9mm and a density of 130kg/m 3 -215kg/m 3 .
优选地，所述木丝板的穿孔率为9％，孔距为10mm，孔径为6mm。Preferably, the perforation rate of the wood wool board is 9%, the hole distance is 10mm, and the hole diameter is 6mm.
优选地，所述蜂窝芯层为纸板制成的蜂窝芯层，层厚度为10-30mm。Preferably, the honeycomb core layer is a honeycomb core layer made of cardboard, and the layer thickness is 10-30mm.
优选地，所述蜂窝芯层的挺度为1000-1500g·cm、克重为600-700g/m2。Preferably, the stiffness of the honeycomb core layer is 1000-1500 g·cm, and the grammage is 600-700 g/m 2 .
优选地，所述蜂窝腔的深度为10-30mm。Preferably, the honeycomb cavity has a depth of 10-30mm.
优选地，所述木塑空腔板上的空腔的深度为10-30mm。Preferably, the depth of the cavity on the wood-plastic cavity plate is 10-30mm.
优选地，所述木丝板厚度为9mm、密度215kg/m3，所述蜂窝腔的深度30mm，所述木塑空腔板上的空腔深度30mm。Preferably, the wood wool board has a thickness of 9 mm and a density of 215 kg/m 3 , the depth of the honeycomb cavity is 30 mm, and the cavity depth of the wood-plastic cavity board is 30 mm.
优选地，所述木塑空腔板上设有用于榫卯连接的榫槽和榫头。Preferably, the wood-plastic cavity board is provided with mortise and tenon for mortise and tenon connection.
根据本发明提供的具体实施例，本发明公开了以下技术效果：According to the specific embodiments provided by the invention, the invention discloses the following technical effects:
本发明提供的宽频带吸声结构木质复合材料板，公开了一种全新的吸声结构，该吸声结构包括依次顺序设置的多孔结构的木丝板、多腔结构的蜂窝芯板、纸质薄层和设有空腔的木塑空腔板，各个层次结构组合形成了一个完整的吸声结构，其中，木丝板与蜂窝芯层组合相当于形成了一个亥姆霍茨共振吸声器，对于高频噪声和中低频噪声进行抑制，蜂窝芯板的多个蜂窝腔为前腔，木塑空腔板上的空腔为大的后腔，后腔的设置能够摩擦和阻滞声能转换为热能，同时多个蜂窝前腔与一个木塑后腔相对应结合形成了前后腔共振吸声结构，提高面层材料有效厚度，再加上木塑空腔板与蜂窝芯层之间的纸质薄层的振动，进一步耗散低频噪声，经实验检测，本发明由木丝板、蜂窝芯板、纸质薄层和木塑空腔组合形成的整体吸声结构，对于高频噪声和中低频噪声均有较好的降噪效果。The wide-band sound-absorbing structure wood composite board provided by the present invention discloses a brand-new sound-absorbing structure, which includes a wood wool board with a porous structure, a honeycomb core board with a multi-cavity structure, paper The combination of thin layers and wood-plastic cavity panels with cavities forms a complete sound-absorbing structure. The combination of wood wool panels and honeycomb core layers is equivalent to forming a Helmholtz resonance sound absorber , to suppress high-frequency noise and low-frequency noise. The multiple honeycomb cavities of the honeycomb core board are the front cavity, and the cavity on the wood-plastic cavity board is the large rear cavity. The setting of the rear cavity can friction and block sound energy At the same time, multiple honeycomb front cavities are combined with a wood-plastic back cavity correspondingly to form a front-rear cavity resonance sound-absorbing structure, which increases the effective thickness of the surface material, plus the gap between the wood-plastic cavity board and the honeycomb core layer The vibration of the paper thin layer further dissipates low-frequency noise. According to the test, the overall sound-absorbing structure formed by the combination of wood wool board, honeycomb core board, paper thin layer and wood-plastic cavity in the present invention is effective for high-frequency noise and Low and medium frequency noise has a good noise reduction effect.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.
图1为本发明实施例提供的宽频带吸声结构木质复合材料板的结构示意图。Fig. 1 is a schematic structural diagram of a wood composite board with a broadband sound-absorbing structure provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
为使本发明的上技术方案更加明显易懂，下面结合具体实施方式对本发明作进一步详细的说明。In order to make the technical solution of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with specific embodiments.
实施例一Embodiment one
参见图1所示，本发明实施例一提供的一种宽频带吸声结构木质复合材料板，包括依次设置的木丝板1、蜂窝芯层2、纸质薄层3和木塑空腔板4。Referring to Fig. 1, a wide-band sound-absorbing structure wood composite board provided by Embodiment 1 of the present invention includes a wood wool board 1, a honeycomb core layer 2, a paper thin layer 3 and a wood-plastic cavity board arranged in sequence 4.
其中，木丝板1上设有多个孔11；蜂窝芯层2为蜂窝板结构，由多个具有一定深度的蜂窝腔21组成，多个蜂窝腔21呈蜂窝状排列；木塑空腔板4面向纸质薄层3的一侧设有空腔41，空腔41内设有贴合于空腔底部的玻璃棉(图1中未示出)。Among them, the wood wool board 1 is provided with a plurality of holes 11; the honeycomb core layer 2 is a honeycomb board structure, which is composed of a plurality of honeycomb cavities 21 with a certain depth, and the plurality of honeycomb cavities 21 are arranged in a honeycomb shape; the wood-plastic cavity board 4 A cavity 41 is provided on the side facing the paper thin layer 3, and glass wool (not shown in FIG. 1 ) attached to the bottom of the cavity is provided in the cavity 41.
木丝板1厚度分可以为3-9mm，密度为130kg/m3-215kg/m3。The wood wool board 1 may have a thickness of 3-9mm and a density of 130kg/m 3 -215kg/m 3 .
在本实施例一中，作为一种可实施方式，木丝板1的厚度为3mm，密度为130kg/m3。In the first embodiment, as a possible implementation manner, the wood wool board 1 has a thickness of 3 mm and a density of 130 kg/m 3 .
木丝板1为典型的多孔性吸声材料，除了有着良好的吸声效果外，其质轻、抗拉及抗冲击的力学性能好，也为运输提供便利。Wood wool board 1 is a typical porous sound-absorbing material. In addition to good sound-absorbing effect, it is light in weight, has good mechanical properties in tensile and impact resistance, and is also convenient for transportation.
蜂窝芯层2为纸板制成的蜂窝芯层，整层厚度为10-30mm。蜂窝芯层2的挺度为1000-1500g·cm、克重为600-700g/m2。优选地，作为一种可实施方式，在本发明实施例一中，蜂窝芯层的厚度为10mm。The honeycomb core layer 2 is a honeycomb core layer made of cardboard, and the thickness of the whole layer is 10-30mm. The stiffness of the honeycomb core layer 2 is 1000-1500 g·cm, and the grammage is 600-700 g/m 2 . Preferably, as an implementable manner, in Embodiment 1 of the present invention, the thickness of the honeycomb core layer is 10 mm.
蜂窝芯层2的原材料多数选择牛皮纸或类似的纸质材料，进行胶合得到六边形的纸芯，可通过浸渍胶液来提高强度，形似蜂窝。这类空心材料有着质轻、强重比高等优点，同时能够起到缓冲和隔声作用。Most of the raw materials of the honeycomb core layer 2 are kraft paper or similar paper materials, which are glued together to obtain a hexagonal paper core, which can be impregnated with glue to increase its strength and resemble a honeycomb. This kind of hollow material has the advantages of light weight, high strength-to-weight ratio, etc., and can play the role of cushioning and sound insulation at the same time.
蜂窝腔21的预设深度为10-30mm，木塑空腔板上的空腔的深度为10-30mm。优选地，在本发明实施例一中，蜂窝腔的深度为10mm，木塑空腔板上的空腔41的深度为10mm。木塑空腔板上的空腔优选为一个大腔，也可以为多个，其空腔的具体尺寸和每块板材上设置的空腔具体数量可以由本领域技术人员根据实际的板材尺寸和承重需要确定，本发明不一一列举。The preset depth of the honeycomb cavity 21 is 10-30mm, and the depth of the cavity on the wood-plastic cavity plate is 10-30mm. Preferably, in Embodiment 1 of the present invention, the depth of the honeycomb cavity is 10 mm, and the depth of the cavity 41 on the wood-plastic cavity plate is 10 mm. The cavity on the wood-plastic cavity plate is preferably one large cavity, and can also be multiple. The specific size of the cavity and the specific number of cavities provided on each plate can be determined by those skilled in the art according to the actual plate size and load-bearing capacity. It needs to be determined, and the present invention does not enumerate them one by one.
在本发明实施例中，纸质薄层3的材质可以为牛皮纸或者牛卡纸，厚度为0.5mm-2mm。In the embodiment of the present invention, the material of the thin paper layer 3 may be kraft paper or kraft cardboard, with a thickness of 0.5mm-2mm.
本发明实施例中，木塑空腔板所采用的材质是将纤维或粉末状的木质材料或植物纤维与热塑性塑料复合得到的复合材。其显著优点是通过添加塑料克服木质材料现有的不足，如塑料具有良好的防潮性能，这克服了纯实木不防潮、容易腐败、易产生开裂、翘曲、老化等弊端。此外木塑材料可回收利用，属于环境友好型材料，且木塑材料不同于需要胶合连接人造板，避免了因酚醛、脲醛胶的使用而产生的甲醛，更有利于人体健康，属于环保材料。但未经处理的木塑本身吸声效果差，市面上常见的木塑吸声材料多以开孔性形式做成吸声板。In the embodiment of the present invention, the material used for the wood-plastic cavity board is a composite material obtained by compounding fibrous or powdery wood materials or plant fibers with thermoplastics. Its remarkable advantage is to overcome the existing shortcomings of wood materials by adding plastics. For example, plastics have good moisture-proof performance, which overcomes the disadvantages of pure solid wood that is not moisture-proof, easy to rot, easy to crack, warp, and aging. In addition, wood-plastic materials can be recycled and are environmentally friendly materials, and wood-plastic materials are different from wood-based panels that need to be glued to connect, avoiding the formaldehyde produced by the use of phenolic and urea-formaldehyde glue, which is more beneficial to human health and is an environmentally friendly material. However, the untreated wood-plastic itself has poor sound absorption effect, and the common wood-plastic sound-absorbing materials on the market are mostly made of sound-absorbing panels in the form of openings.
本发明实施例一提供了一种带有全新的吸声结构的木质复合材料板，其中木塑空腔板的空腔设计能够通过摩擦和阻滞，将声能转换为热能，腔内的玻璃棉为多孔材料，可对高频噪声起到降噪作用，木丝板和蜂窝芯层形成亥姆霍茨共振吸声结构，蜂窝前腔与木塑后腔前后对应形成双腔吸声结构，中间设置的纸质薄层则通过振动耗散低频噪声。由上述各层次组合而成的该吸声结构，通过独特的结构设计整体上能够对高频噪声和中低频噪声均有较好的降噪效果，吸声频带更宽。Embodiment 1 of the present invention provides a wood composite board with a new sound-absorbing structure, wherein the cavity design of the wood-plastic cavity board can convert sound energy into heat energy through friction and retardation, and the glass in the cavity Cotton is a porous material, which can reduce high-frequency noise. The wood wool board and the honeycomb core layer form a Helmholtz resonance sound-absorbing structure. A thin layer of paper in the middle dissipates low-frequency noise through vibration. The sound-absorbing structure composed of the above-mentioned layers can have a better noise reduction effect on high-frequency noise and medium-low frequency noise through a unique structural design, and the sound-absorbing frequency band is wider.
实施例二Embodiment two
在本发明实施例二中，木丝板的厚度为6mm，密度为187kg/m3，蜂窝芯层选用的蜂窝纸板形成的层的厚度为20mm，底层木塑空腔板上的空腔深度为20mm。其他结构参数同实施例一，不再赘述。In the second embodiment of the present invention, the thickness of the wood wool board is 6mm, the density is 187kg/m 3 , the thickness of the layer formed by the honeycomb paperboard selected for the honeycomb core layer is 20mm, and the cavity depth on the bottom wood-plastic cavity board is 20mm. Other structural parameters are the same as those in Embodiment 1, and will not be repeated here.
实施例三Embodiment Three
本发明实施例三为一优选实施例，在本实施例三中，该吸声结构的最优组合参数是木丝板厚度9mm，密度215kg/m3，木丝板的穿孔率为9％，孔距为10mm，孔径为6mm。蜂窝芯层的蜂窝前腔深度为30mm，木塑空腔板上的空腔(后腔)深度为30mm，其他结构参数同实施例一，不再赘述。Embodiment 3 of the present invention is a preferred embodiment. In Embodiment 3, the optimal combination parameters of the sound-absorbing structure are wood wool board thickness 9mm, density 215kg/m 3 , wood wool board perforation rate 9%, The hole distance is 10mm and the hole diameter is 6mm. The depth of the honeycomb front cavity of the honeycomb core layer is 30mm, and the depth of the cavity (back cavity) on the wood-plastic cavity plate is 30mm. Other structural parameters are the same as those in Embodiment 1, and will not be repeated.
在本发明实施例三中，参见图1所示，木塑空腔板上设有用于榫卯连接的榫槽和榫头。In the third embodiment of the present invention, as shown in FIG. 1 , the wood-plastic cavity board is provided with a mortise and tenon for tenon-tenon connection.
在现有技术的实际建筑工程里，为达到合适的声学效果，在吸声体背后留有空腔，但现有的吸声设计中的空腔的实现要靠轻钢龙骨拼接，这意味着安装时要完成龙骨架、墙体、吸声材料间多个连接点的固定，繁琐的安装既耗费时间成本又需要人工费用。同时，因龙骨架的自重和长度，运输过程中的搬运也不便利。因此，从经济成本上考虑，现有技术中的吸声结构设计，除了吸声材料本身的价格外，还存在安装和运输时的高附加成本。本发明提供的吸声结构，木塑空腔板之间榫卯连接，无需轻钢龙骨，因此采用本发明的吸声结构，满足结构强度的同时又能替代金属龙骨的轻质材料，安装流程方便快捷，使安装成本大大降低。In the actual construction project of the prior art, in order to achieve a suitable acoustic effect, a cavity is left behind the sound-absorbing body, but the realization of the cavity in the existing sound-absorbing design depends on the splicing of light steel keels, which means During the installation, it is necessary to complete the fixing of multiple connection points among the keel frame, the wall, and the sound-absorbing material. The cumbersome installation is time-consuming and labor-intensive. At the same time, due to the dead weight and length of the dragon frame, it is also inconvenient to carry during transportation. Therefore, considering the economic cost, the sound-absorbing structure design in the prior art, besides the price of the sound-absorbing material itself, also has high additional costs during installation and transportation. The sound-absorbing structure provided by the present invention is connected by mortise and tenon joints between the wood-plastic cavity boards without light steel keels. Therefore, the sound-absorbing structure of the present invention meets the structural strength and can replace the light-weight material of the metal keel at the same time. The installation process It is convenient and quick, and the installation cost is greatly reduced.
本发明提供的宽频带吸声结构木质复合材料板，进一步优化多层吸声材料的全频吸声效果，将木丝板作为面层材料，蜂窝纸芯为芯层材料，在蜂窝后增加木塑空腔层，木塑在保证背后空腔效果的同时可进一步增强力学性能并为安装时开榫槽、固定连接件提供方便。将蜂窝与木塑间加入纸质薄层，得到四层复合吸声材料。通过设计木丝板的厚度与密度、蜂窝厚度、木塑空腔深度这四个结构参数，分析不同结构参数对吸声效果的影响，得到能够起到全频吸声效果的相关工艺参数和最优工艺参数，上述公开的相关工艺参数，均能达到较好的宽频带吸声效果，解决了现有技术中低频降噪声效果欠佳、缺乏合适的全频高降噪性的吸声体的技术问题。The wide-band sound-absorbing structure wooden composite material board provided by the present invention further optimizes the full-frequency sound-absorbing effect of the multi-layer sound-absorbing material. The wood wool board is used as the surface layer material, and the honeycomb paper core is used as the core layer material. Plastic cavity layer, wood plastic can further enhance the mechanical properties while ensuring the effect of the back cavity, and provide convenience for opening tenons and fixing connectors during installation. A thin layer of paper is added between the honeycomb and wood-plastic to obtain a four-layer composite sound-absorbing material. By designing the four structural parameters of wood wool board thickness and density, honeycomb thickness, and wood-plastic cavity depth, the influence of different structural parameters on the sound absorption effect is analyzed, and the relevant process parameters and the optimum sound absorption effect that can achieve full-frequency sound absorption are obtained. Excellent process parameters, the relevant process parameters disclosed above can achieve a good broadband sound absorption effect, which solves the problem of poor noise reduction effect at low and medium frequencies in the prior art, and the lack of suitable full-frequency and high-noise reduction sound-absorbing bodies technical problems.
具体的，经实验检测，采用本发明技术方案设置的吸声材料的吸声系数测试结果参见表1，其中1-3为三组本发明吸声材料测试样本，由表1可见，本发明提供的吸声结构，在125Hz-2000Hz较宽频带内的吸声系数均值达到0.673，吸声效果较好。表2为现有技术中常见吸声材料的吸声系数测试结果，其吸声系数仅能达到0.326。Specifically, through experimental testing, see Table 1 for the test results of the sound absorption coefficient of the sound-absorbing material set by the technical solution of the present invention, wherein 1-3 are three groups of test samples of the sound-absorbing material of the present invention, as can be seen from Table 1, the present invention provides The sound absorption structure has an average sound absorption coefficient of 0.673 in a wide frequency band of 125Hz-2000Hz, and the sound absorption effect is good. Table 2 shows the test results of the sound absorption coefficient of common sound-absorbing materials in the prior art, and the sound absorption coefficient can only reach 0.326.
表1Table 1
表2Table 2
本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处。综上所述，本说明书内容不应理解为对本发明的限制。In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; meanwhile, for those of ordinary skill in the art, according to the present invention Thoughts, there will be changes in specific implementation methods and application ranges. In summary, the contents of this specification should not be construed as limiting the present invention.
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